Crossed Pins? Is this the reason

I unlocked my 1900XP and was able to get all the multi. Now the other day I tried the 10,10.5 and it defaults to 12. It use to work and all the others still work. SO what could have happend? DO I need to go through it again? It really is a pain but I will iF i have to casue I need the 10 to get the 160+ working without pushing the CPU to hard.